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3 years ago

What is the inverse of the function f(x) = 2x – 10?

Mathematics

2 answers:

docker41 [41]3 years ago

4 0

I don't know what the answer is but I know this is not the answer:

Evgesh-ka [11]3 years ago

3 0

First make x the subject of f(x) = 2x - 10:-

2x = f(x) + 10

x = 1/2 f(x) + 5

mow replace x by hx) and f(x) by x:-

h(x )= 1/2 x + 5

You might be interested in

It is difficult to override a presidential veto?Why do you think is it difficult? Do you think thisgood thing? Why or why not?

Vanyuwa [196]

It is difficult to overthrow a presidential veto because each house has to have a two-thirds majority vote to overthrow The veto. it is difficult because 2/3 is more than 1/2 and it has to be in each house so it is very difficult. I think this is a good thing because if Congress wanted to pass a bill the president did not like then it is hard for them to pass it and the president is the leader so he should make the big decisions.

3 0

3 years ago

If R is the midpoint of TS, TR = 5x - 12, and RS = 3x + 8, find TS.

GenaCL600 [577]

Answer:

5x -12 = 3x +8 (set the two = each other because they are the same length)

2x- 12= 8 (subtract 3x from both sides)

2x = 20 (add 12 to both sides)

x=10 (what x= for both expressions)

5(10) -12 (plug it into the first one to see what the length is and to see they're =

50 - 12 ( I already multiplied, now subtract)

38 (what the length of TR is)

3(10) +8 (plug it in again but into the other expression)

30+8 (multiply and add)

38 (the two have the same answer, so the x-value is correct.)

38+38= 76 (add the lengths of RS and TR and you get the length of TS)

Step-by-step explanation:

I hope this helps :)

6 0

2 years ago

Read 2 more answers

A red ant travels 9/8 inches in 3/4 minutes and 3 3/8 inches in 2 1/4 minutes what is the ants speed in inches per minute? What

I am Lyosha [343]

Answer:

1. 1.5 inches per minute

2. 90 inches per hour

Step-by-step explanation:

speed = $\frac{distance}{time}$

1. total distance covered = $\frac{9}{8}$ + $\frac{27}{8}$

= $\frac{9+27}{8}$

= $\frac{36}{8}$

= 4 $\frac{1}{2}$ inches

Total time taken = $\frac{3}{4}$ + $\frac{9}{4}$

= $\frac{3 +9}{4}$

= $\frac{12}{4}$

= 3 minutes

The ants average speed = $\frac{4.5}{3}$

= 1 $\frac{1}{2}$

= 1.5

The ants speed is 1 $\frac{1}{2}$ inches per minute.

2. Since;

60 minutes = 1 hour

3 minutes = x hours

x = $\frac{3}{60}$

= $\frac{1}{60}$

= 0.05 hours

Speed = $\frac{4.5}{0.05}$

= 90 inches per hour

The red ants speed is 90 inches per hour.

3 0

2 years ago

These triangles are similar. find Y and X

CaHeK987 [17]

It these triangles are similar, then the sides of the triangles are in proportion:

$\dfrac{y}{10}=\dfrac{y+4}{15}$ cross multiply

$15y=10(y+4)$ use distributive property

$15y=10y+40$ subtract 10y from both sides

$5y=40$ divide both sides by 5

$\boxed{y=8}$

$\dfrac{x}{4}=\dfrac{6}{8}$ cross multiply

$8x=(4)(6)$

$8x=24$ divide both sides by 8

$\boxed{x=3}$

3 0

2 years ago

Set of data has a normal distribution with a mean of 56 and a standard deviation of 7. Find the percent of data within the follo

makvit [3.9K]

Answer:

.99815

which is about

99.815%

Step-by-step explanation:

we are looking for 35<x<77

We need to find (what I think is called) the z score which is acheieved through what I'm pretty sure is called standardizing

What we do is subtract the mean and then divide by the standard deviation

so for 35 we have

(35-56)/7= -3.29

due to the fact that the normal distribution is symmetric this is equal to 1-p(3.29)

to find p(3.29) grab a ztable and get p(3.29)= .9995

1-.9995= .0005

For 77 we have

(77-56)/7=3

grab a ztable and find the 3= .99865

Finally subtract these two to get the final answer

.99865-.0005= .99815

7 0

2 years ago